Wire hanger



31, 1933- c. M. GOODRICH ET AL 1,933,426

WIRE HANGER Filed 001;. 27, 1931 1711267050729: CHflU/VCEV /74E5/-/ CiOODE/CH Patented Oct. 31, 1933 UNITED STATES PATENT OFFICE WIRE HANGER Ontario, Canada Application October 27, 1931. Serial No. 571,422

1 Claim.

This invention relates to electric power transmission towers and particularly to the hangers which they carry for supporting grounding wires, one of the objects being to provide a construc- 5 tion which will properly distribute the stresses exerted by the unbalanced pull of these wires, when broken, throughout the adjacent parts of the tower.

Having reference to the accompanying drawing:

Figure 1 is a side elevation of one form of the invention.

Figure 2 is a top plan of Figure 1.

Figure 3 is a detail of Figure 2, as the invention appears when the supported wire is broken.

The drawing shows the top corner of a tower only as this is sufficient to illustrate the invention. In detail, the top frame 1 of the tower proper comes to points at its side ends and carries a triangular structure consisting of angle irons2 at the top of which a horizontal angle .iron 3 is carried. This is held rigidly against lateral movement by braces 4 and 5.

The hanger itself consists of an extending fiat ductile plate 6 clamped in a vertical plane between a pair of vertical angle irons '7 which are fixed to the brace 4. This plate is apertured so that a wire clamp 8 may be swung therefrom to carry a grounding wire for the tower.

Stresses created by longitudinal forces exerted along the grounding wire are sustained by the angle irons 2 While those created by lateral forces are sustained by the brace 4, horizontal angle iron 3 and to some extent by the braces 5. .The

85 parts under discussion are thus able to overcome these forces without injury.

However, when the grounding wire breaks an unbalanced pull will result which, were'the hanger constructed in the usual rigid manner, would exert a rotative force on the angle irons 7 and thus to the adjacent parts, and as the same are not designed to sustain such forces there is a possibility their being strained. That is to say, the angle irons 2 and the braces 3 and 4 may be twisted out of shape to some extent.

In the present instance this rotative force does not result because the plate 6 will bend substantially in line with the wire. The stresses then resulting, which must be sustained by the parts mentioned above, are very nearly the same, if not exactly, as those resulting from forces applied longitudinally along the wire. As before mentioned these are much more readily sustained without injury than are rotative forces.

While a specific form of the invention has been shown in accordance with the patent statutes, it 7 is not intended to limit the scope of this invention exactly thereto, except as defined by the appended claim.

We claim:

The combination of a tower including bracing elements constructed and arranged to resist, at least normal strains exerted by a wire or wires supported thereby, a vertical extension fixed to said bracing elements and a wire suspension plate right-angularly extending from said vertical ex- 35 tension, said plate being constructed of bendable material and arranged in a substantially vertical plane.

CHAUNCEY MARSH GOODRICH. ARCHIBALD H. MACQUARRIE. 

